Polyoxyethylene ether monomer, synthesis method thereof and application thereof in synthesis of water reducing agent

A technology of polyoxyethylene ether and polyethylene glycol vinyl ether, which is applied in the field of raw material synthesis of concrete admixtures, to achieve the effects of reducing production costs, good cost performance and competitive advantages

Active Publication Date: 2010-07-14
LIAONING OXIRANCHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a polyoxyethylene ether monomer, while overcoming the defects of ester macromonomers and ether macromonomers in the prior art, it is not only low in cost but also has good performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0024] Put 200 parts of polyethylene glycol monomethyl ether (molecular weight: 800), 4 parts of AH, 10 parts of cyclohexane, and 0.1 part of hydroquinone into a round-bottomed flask with a condenser and mix well, and heat up to 150± 5°C, reacted for 6 hours, cooled to room temperature after the reaction, filtered to remove the catalyst, and obtained polyoxyethylene ether monomer CH with a molecular weight of 800 3 O(CH 2 CH 2 O) 17 CH=CH 2 , Determination of its double bond retention rate of more than 92%.

preparation Embodiment 2

[0026] Put 200 parts of polyethylene glycol monomethyl ether (molecular weight 1200), 0.4 parts of concentrated sulfuric acid, 20 parts of cyclohexane, and 0.1 part of hydroquinone into a round-bottomed flask with a condenser and mix well, and heat up to 150 ±5°C, react for 6 hours, and cool down to normal temperature after the reaction to obtain the polyoxyethylene ether monomer CH with a molecular weight of 1200 3 O(CH 2 CH 2 O) 26 CH=CH 2 , Determination of its double bond retention rate of more than 80%.

preparation Embodiment 3

[0028] Put 200 parts of polyethylene glycol monomethyl ether (molecular weight: 2000), 10 parts of 10% oleum, 20 parts of cyclohexane, and 0.1 part of hydroquinone into a round bottom flask with a condenser tube and mix well , heated up to 160±5°C, reacted for 6 hours, and lowered to normal temperature after the reaction to obtain the polyoxyethylene ether monomer CH with a molecular weight of 2000. 3 O(CH 2 CH 2 O) 44 CH=CH 2 , Determination of its double bond retention rate of more than 75%.

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Abstract

The invention provides a polyoxyethylene ether monomer which is methoxy polyethylene glycol vinyl ether formed by taking polyethylene glycol monomethyl ether as raw materials and carrying out dehydration reaction, and the structural formula is CH3O(CH2CH2O)nCH=CH2, wherein n is integer within the range of 10-44. The polyoxyethylene ether monomer reserves the advantages of the existing water reducing agent monomer compound and overcomes the defects thereof, and has better cost performance and competitive advantage. The invention also provides a preparation method of the polyoxyethylene ether monomer and the application thereof in the synthesis of the water reducing agent.

Description

technical field [0001] The invention relates to a polyoxyethylene ether monomer, its synthesis method and application, and belongs to the technical field of raw material synthesis of concrete admixtures. Background technique [0002] Polycarboxylate high-efficiency water reducer is the third generation of high-efficiency water reducer developed after the ordinary water reducer represented by wood calcium and the high-efficiency water reducer represented by naphthalene. This type of water reducer is mainly divided into two types of polycarboxylate water reducers, ether and ester, according to the difference of the macromer. At present, the performance of the ester polycarboxylate water reducer is better, but the cost is high; the ether type The cost of polycarboxylate water reducer is lower, but its performance is slightly worse. Macromonomer is the main component of polycarboxylate superplasticizer, which has a crucial influence on the performance and price of superplastici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/48C07C43/16C07C41/18C08F290/06C04B24/26C04B24/16C04B103/30
Inventor 朱建民刘兆滨仲崇纲董振鹏
Owner LIAONING OXIRANCHEM INC
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